基于SPS的输油管道典型事故瞬态工况分析

为准确掌握输油管道事故工况变化对安全运行的影响，基于SPS管道仿真模拟软件，对输油管道典型事故发生时的瞬态工况进行模拟分析，得出了输油管道瞬时压力和流量的变化规律。结果表明：管道沿线泵站停运时，流量减小，进站压力升高，出站压力降低；泵站启动时，流量增加，进站压力降低，出站压力升高；阀门突然关闭时，阀门通过流量迅速降低为0，上、下游流量下降，上游压力上升，下游压力降低；管道发生泄漏时，泄漏点压力迅速降低，上游流量增加，下游流量减小，上、下游压力均降低。分析结果对制定输油管道事故应急预案具有一定的指导意义。（图6，参10）

SPS-based typical accidental transient condition analysis of pipeline

In order to find out the effect of accidental condition variance of oil pipeline on safe operation, this paper analyzes the typical accidental transient condition based on simulation, and figures out the change patterns of transient pressure and flowrate variation of pipeline by using SPS pipeline simulation software. Results show that flowrate decreases, inlet pressure increases and outlet pressure decreases when some pump station along the line shuts down. While flowrate increases, inlet pressure decreases and outlet increases when pump starts up. When some valve is closed, flowrate going through the valve decreases to zero rapidly and upstream flowrate decreases together with downstream flowrate. And meanwhile, upstream pressure increases while downstream pressure decreases. When pipeline leaks, pressure on the leak point decreases quickly, and upstream flow rate increases, downstream flow rate decreases while upstream and downstream pressure both decrease. These results are instructive to the preparation of emergency plan for pipeline accidents. （6 Figures, 10 References）